Top 50 Advanced Java Interview Questions and Answers for Freshers PDF

Advanced Java Interview Questions

Advanced Java Interview Questions covers Thread Concepts, Serialization, Polymorphism, Collections of objects & classes and a lot more.Java Advanced is a Java platform extension API which offers a set of object-oriented interfaces that support a simple, high-level programming model.

Applicants, who’re looking to pursue a career in Java and are going to appear in Java Interview, need to analyze Java Advanced Interview Questions. The Following are the Top 50 Advanced Java Interview Questions and Answers for Freshers asked in MNC’s. So, job seekers go through the Advanced Java Interview Questions PDF and start their preparation according to it.

“Advanced Java” is nothing, however specialization in domains such as web, networking, data base handling etc. And, most of the packages “Advanced Java” is always start with ‘javax.servlet.

Advanced Java Interview Questions

Advanced Java Interview Questions And Answers

Advance Java also allows developers to make their own image manipulation routines without the additional cost or licensing restrictions etc. Those, who want to crack Advanced Java Interview, need to download Advanced Java Interview Questions and Answers Pdf which are very important, particularly, for freshers developers.

In addition to reading the Interview Questions On Advanced Java, we recommend to go through this page which is covering important, Multithreading Interview Questions Java Advanced and Advanced Java Interview Questions Javatpoint etc.

Question 1: Why do threads block on I/O?

Answer:The Threads block on I/O, so that another threads may run while the I/O Operation is executed.

Question 2: Which containers use a border Layout as their default layout?

Answer: The Window, Frame and Dialog classes use a border layout as their default layout.

Question 3: What is a transient variable?

Answer:A transient variable is a variable that may not be serialized.

Question 4: What is synchronization and why is it important?

Answer: The term synchronization is the ability to control the access of multiple threads to shared resources.And it is important because, without it, it is not possible for one thread to modify a shared object while another thread is in the process of using or updating that object’s value. This often leads to major errors.

Question 5: Can a lock be acquired on a class?

Answer: Yes, a lock can be acquired on a class and this lock is acquired on the class’s Class object.

Question 6: Is null a keyword?

Answer:No, the null is not a keyword.

Question 7: What’s new with the stop(), suspend() and resume() methods in JDK 1.2?

Answer: These methods have been deprecated in JDK 1.2.

Question 8: What method is used to specify a container’s layout?

Answer: The setLayout() method is used to specify a container’s layout.

Question 9: What is the preferred size of a component?

Answer:The preferred size of a component is the minimum component size that will permit the component to show normally.

Answer: The Panel class is the immediate superclass of the Applet class

Question 28: Can an object’s finalize() method be invoked while it is reachable?

Answer:An object’s finalize() method cannot be invoked by the garbage collector while the object is still accessible. Though, an object’s finalize() method may be invoked by other objects.

Question 29: What is the difference between preemptive scheduling and time slicing?

Answer:Under preemptive scheduling, the highest priority task performs until it enters the waiting or dead states or a higher priority task comes into existence. Under time slicing, a task performs for a predefined slice of time and then re-enters the pool of ready tasks.

Question 30: Name three Component subclasses that support painting.

Answer:The Canvas, Frame, Panel, and Applet classes support painting.

Question 31: What is the immediate superclass of the Dialog class?

Answer: Window.

Question 32: What value does readLine() return when it has reached the end of a file?

Answer: The readLine() method returns null, when it has reached the end of a file.

Question 33: What is clipping?

Answer: Clipping is the process of confining paint operations to a limited area or shape.

Question 34: What is a native method?

Answer: A native method is a method that is applied in a language other than Java.

Question 35: Can a for statement loop indefinitely?

Answer:Yes, a for statement can loop indefinitely. For example, consider the following:for(;;) ;

“Core Java” is Sun’s term, used to refer to Java SE, the standard edition and a set of connected technologies, like the Java VM, CORBA, et cetera. This is typically to distinguish from Java ME or Java EE, also note that it is also a set of libraries rather than the programming language. Check below listed Advanced Core Java Interview Questions and prepare well for interview session.

Question 41: What are the important features of Java 8 release?

Answer: it is one of the frequently asked questions in java interview. And, Some of the important features of Java 8 are as provided below:

Interface changes with default and static methods

Functional interfaces and Lambda Expressions

Java Stream API for collection classes

Java Date Time API

Question 42: What do you mean by platform independence of Java?

Answer: In terms of Core Java, the platform independence means that, you can run the same Java Program in any Operating System. For instance, you can inscribe java program in Windows and run it in Mac OS.

Question 43: What is JVM and is it platform independent?

Answer:Java Virtual Machine is the heart of java programming language and it is responsible for converting byte code into machine readable code. It is not platform independent that is only the reason; you have different Java Virtual Machine for different operating systems.

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